Inna is the oldest child of Nando and Shelly Nimbletoe. She had a fairly happy upbringing, but when she was 14 she went through a rebellious teen phase and joined a visiting circus on a whim. She worked as a ticket salesman for a number of years, while picking up skills from the performers-- she became quite a talented violinist. When she was 17 the owner of the circus, Sedrom Downpike, was getting close to retiring and everyone thought that he would be passing the circus on to his apprentice of sorts, Nalhir "the Whisper" Do't'tar. Sedrom and Inna were close and one evening he confided in her that he was actually going to be giving the circus to a mild-mannered water genasi named Flint because he didn't trust Nalhir. Unbeknownst to them, Nalhir overheard the conversation. In his fury, he staged an elaborate plan to burn down the circus and everyone with it and frame Inna for the crime under the guise that she was angry she hadn't been promoted from ticket salesman to a performer in her 3 years at the circus. He also staged his own death in the fire, but Inna saw him sneaking away. She tried to use this as proof of her innocence, but everyone thought she was just trying to pass the blame. They attempted to charge her for the crime but she managed to escape using the tricks she learned in the circus.

After leaving the circus, Inna began traveling with a group that would eventually become her closest friends. Powerful organizations began to take notice of the group's adventures and Inna and her friends ended up joining the Harpers, a group dedicated to retrieving powerful magic items and keeping them safe from those who would abuse them. Her group became more and more notable as time went on.

On one of their adventures Inna found a very alluring magical sword. After attuning to it she discovered that it was possessed by the spirit of an elven princess, Vahael. The two had similar values and Vahael was happy to be wielded by Inna and help her in fights. They bonded very quickly, something that Vahael describes as "a deep bond that cannot be put into words." Eventually their relationship turned romantic, which most people find strange but Inna is just happy to be with someone she loves.

In one particularly difficult mission in the Shadowfell, one of Inna's party members fell. In order to revive him she pledged herself to the Raven Queen. Being a champion of the Raven Queen turned out to be a good choice and they have both benefited from the arrangement. In the Shadowfell, Vahael has a corporeal form and she and Inna can have a fairly normal relationship. Inna is now technically undead as a revenant, and her hair and irises are naturally bright white now. She typically dyes her hair back to its natural pink, though.